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High-antioxidation ultramicro grape whole powder and preparation method thereof

A technology of ultra-fine whole powder and grapes, which is applied in food science, food preservation, application, etc. It can solve the problems of waste of rich nutrients, waste of wine lees, and destruction of grape nutrients, so as to reduce losses, improve taste, and delicate taste Effect

Inactive Publication Date: 2017-09-01
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, the main processing and utilization methods of grapes are brewing wine and making raisins. Although these methods can prolong the utilization time of grapes, wine making will waste the nutrient-rich wine residue, and making traditional raisins has a greater impact on the nutritional content of grapes. destroy
In addition, no matter what kind of utilization method is used, grape skins and seeds are less utilized because they will affect the taste, resulting in a waste of rich nutrients

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Select fresh grapes without disease, damage, no cutting, no peeling, and no seeds as raw materials. After cleaning the whole grapes, irradiate the grapes with a microwave power of 300w for 100s to sterilize and eliminate enzymes. The grapes are dried with low-pressure superheated steam. Set the air pressure at 5kPa and the temperature at 60°C. After 3 hours, take them out and put the dried grapes into the nitrogen protection airflow for ultrafine grinding. Set the air pressure at 0.5MPa and the system air volume at 2m 3 / min, classifier rotation speed 2000r / min, feeding speed 10kg / h; the grape coarse powder is crushed for the second time by using zirconia ball mill under liquid nitrogen low temperature, the nitrogen flow rate is 200ml / 100g dried grape whole fruit coarse powder, ball The material ratio is 6:1, the machine speed is 200r / min, grind for 1 hour, and then vacuum-pack the ultrafine grape powder obtained by crushing.

[0030] The high anti-oxidation ultrafine g...

Embodiment 2

[0032] Select fresh grapes without disease, damage, cutting, peeling, and seeding as raw materials. After cleaning the whole grapes, irradiate the grapes with microwave power of 400w for 80s to sterilize and eliminate enzymes. The grapes are dried with low-pressure superheated steam. The air pressure is 8kPa and the temperature is 80°C. After 4 hours, the dried grapes are put into the nitrogen protection airflow for ultrafine grinding. The air pressure is 0.8MPa, and the air volume of the system is 3m. 3 / min, classifier rotating speed 2500r / min, feeding speed 12kg / h; the grape coarse powder is crushed for the second time by using zirconia ball mill under the low temperature of liquid nitrogen, the nitrogen flow rate is 300ml / 100g dried grape whole fruit coarse powder, ball The material ratio is 6:1, the machine speed is 300r / min, grind for 1 hour, and then vacuum-pack the ultrafine grape powder obtained by crushing.

[0033] The high anti-oxidation ultrafine grape powder proc...

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Abstract

The invention discloses a preparation method of high-antioxidation ultramicro grape whole powder. The preparation method comprises the following steps of (1) selecting fresh entire grapes which are free from diseases and damage and do not need peeling and deseeding, cleaning the entire grapes, and performing microwave sterilization and enzyme deactivation; (2) performing low-pressure superheated steam drying on the entire grapes after being subjected to enzyme deactivation; (3) putting the dried grapes in nitrogen protection air flows, and performing primary crushing; and (4) performing ball milling on grape coarse powder obtained through air flow primary crushing with zirconium oxide under low temperature of liquid nitrogen for secondary crushing so as to obtain the ultramicro grape whole power. According to the preparation method disclosed by the invention, grape skin and seeds can be well utilized, the using period of the grapes can be prolonged, the economic benefits are increased, special nutrient components of the grapes can also be reserved, and technical problems existing in the prior art are solved.

Description

technical field [0001] The invention relates to a production process of high-antioxidation ultrafine grape whole powder, which belongs to the technical scope of food processing. Background technique [0002] Grape (scientific name: Vitis vinifera L.) is a woody vine of the family Vitis genus, with spherical or oval fruit. In addition to being rich in glucose, fructose, and xylose, grape ingredients are also rich in active substances such as minerals including calcium, iron, phosphorus, zinc, vitamin B, vitamin C, vitamin P, tartaric acid, oxalic acid, and various amino acids. , especially grape skins and seeds that are not commonly eaten are rich in flavonoids such as anthocyanins, superoxide dismutase (SOD), zidonolic acid and resveratrol, these components have been studied It has been found to have biologically active functions such as anti-oxidation, anti-aging, anti-virus, prevention of cardiovascular disease, cancer and improvement of immunity. [0003] However, as a ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A23L19/00A23L3/01A23L3/40
CPCA23L3/01A23L3/40A23L19/01
Inventor 李莉罗自生严嘉玮应铁进茅林春
Owner ZHEJIANG UNIV
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